package demo4.mapper;
import demo4.vo.User;
import org.springframework.stereotype.Component;

@Component
public class UserMapper implements IUserMapper {

    @Override
    public int insert(User user) {
        System.out.println("insert into user");
        return 0;
    }

    @Override
    public User selectUsername(String username) {
        System.out.println("select username");
        return null;
    }
}
